With annual reassessments, Alberta stands apart from most provinces, leaving property owners little time to react or correct errors.
If you are preparing for the 2026 tax year, understanding the Alberta Property Tax Assessment timeline is critical.
Miss a step or a deadline, and you could be locked into an inflated tax bill for the entire year.
Key Dates for Alberta Property Tax Assessment 2026
- Valuation date: July 1, 2025
- Pre-roll consultation period: November-December 2025 (varies by municipality, typically begins ealy November)
- Assessment notices mailed: Early January 2025 (typically around January 10)
- Complaint deadline: ~60 days from mailing (expected mid-March 2026)
Note: Exact dates vary by municipality. Always refer to your official notice.
Although the complaint period lasts about two months, it moves quickly. Once the deadline passes, your assessed value becomes final, even if it’s based on errors or outdated assumptions.
3 Immediate Steps When You Receive Your Assessment Notice
When your notice arrives in the mail, don’t wait. Take these three quick steps to protect your bottom line:
1. Verify the property details
Check that the legal description, building size, land area, and property use are accurate. Small mistakes here can significantly impact your tax liability.
2. Benchmark your assessment
Use online tools (e.g: MyProperty – Edmonton) to compare your assessed value against similar properties. Major discrepancies can signal over-assessment.
3. Review income assumptions
For income-generating properties, review the vacancy rate and capitalization rate used in the assessment. Are they consistent with 2025 market data? Even small miscalculations can inflate your valuation.
Pre-Complaint Discussions: A Strategic Advantage
Many Alberta municipalities, such as Calgary and Edmonton, offer a pre-roll consultation period in November and December.
During this time, assessors share preliminary values and property owners can raise concerns or request corrections before the Official Assessment Notice is issued in January.
Engaging early in the pre-roll period can often lead to value adjustments without having to file a formal complaint.
How Leyton’s Experts Can Support You
If your concerns are not resolved during the pre-roll period, you can file a formal complaint with the Assessment Review Board. Leyton’s property tax consultants manage the entire process, including:
- Analyzing your assessment and comparable market data
- Preparing disclosure documents and complaint filings
- Representing you before the municipal Assessment Review Board
Our experts understand the nuances of Alberta’s system and how to pursue assessment reductions efficiently.
You only get one short per year
In Alberta, you have one opportunity each year to formally contest your property’s assessed value by filing a complaint with the Assessment Review Board. Once the 2026 assessment notices are issued in January, the clock starts ticking. Missing the complaint deadline means your assessment stands for the entire tax year.
Unless you engaged in the pre-roll consultation period in November or December 2025, when preliminary values could still be reviewed and adjusted informally with the assessor.
Reach out to our experts
If you have questions about your 2026 property assessment or need guidance on whether a correction or formal complaint is warranted, reach out to our team of experts.
We are here to ensure your assessment reflects the fair market value and that you do not overpay.
